Question
Physics Question on Wave optics
A polariser is used to:
A
increase intensity of light
B
produce unpolarised light
C
reduce intensity of light
D
produce polarised light
Answer
increase intensity of light
Explanation
Solution
A polariser is used to increase intensity of light.
A polarizing filter transmits only the component of the wave parallels to its axis while reducing the intensity of any light not polarized parallel to its axis. Only the component of the EM wave that is parallel to the axis of a filter is passed. A polarise is used to produce polarized light and a Nicol prism is used to produce polarised light.